This post describes the basics of temporal light artifacts and introduces a new “illusion,” the phantom wiggle.
In 2008 the US Department of Transportation, National Highway Traffic Safety Administration (NHTSA) assessed the risks associated with glare, as directed by the US Congress.
Softlights.org, an organization “dedicated to safe, responsible, human compatible outdoor and vehicle lighting,” has noticed that the above report was the last time the issue of glare was assessed at this level. Now they are campaigning for a re-evaluation – which is reasonable, given that LEDs, lasers, and other technological developments are now widespread even though they were not yet prevalent in 2008.
Why are the physiological effects of long wavelength light (often referred to as photobiomodulation) never mentioned as part of the “non-visual effects” of light?
This is a list of all glare factors that I can think of. Each point comes with a short description / examples.